Java Web程序中利用Spring框架返回JSON格式的日期
发布时间:2020-12-14 14:24:14 所属栏目:Java 来源:网络整理
导读:返回Json时格式化日期Date 第一步:创建CustomObjectMapper类 /** * 解决SpringMVC使用@ResponseBody返回json时,日期格式默认显示为时间戳的问题。需配合mvc:message-converters使用 */ @Component("customObjectMapper") public class CustomObjectMapper
返回Json时格式化日期Date /** * 解决SpringMVC使用@ResponseBody返回json时,日期格式默认显示为时间戳的问题。需配合<mvc:message-converters>使用 */ @Component("customObjectMapper") public class CustomObjectMapper extends ObjectMapper { public CustomObjectMapper() { CustomSerializerFactory factory = new CustomSerializerFactory(); factory.addGenericMapping(Date.class,new JsonSerializer<Date>() { @Override public void serialize(Date value,JsonGenerator jsonGenerator,SerializerProvider provider) throws IOException,JsonProcessingException { SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); jsonGenerator.writeString(sdf.format(value)); } }); this.setSerializerFactory(factory); } } 第二步:配置如下: <mvc:annotation-driven> <mvc:message-converters> <bean class="org.springframework.http.converter.json.MappingJacksonHttpMessageConverter"> <property name="objectMapper" ref="customObjectMapper"></property> </bean> </mvc:message-converters> </mvc:annotation-driven> 效果如下: 格式化后 进阶:返回自定义格式日期 import java.io.IOException; import java.text.SimpleDateFormat; import java.util.Date; import org.codehaus.jackson.JsonGenerator; import org.codehaus.jackson.JsonProcessingException; import org.codehaus.jackson.map.JsonSerializer; import org.codehaus.jackson.map.SerializerProvider; /** * @description 自定义返回JSON 数据格中日期格式化处理 */ public class CustomDateSerializer extends JsonSerializer<Date> { @Override public void serialize(Date value,SerializerProvider provider) throws IOException,JsonProcessingException { SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); jsonGenerator.writeString(sdf.format(value)); } } 使用方式: @JsonSerialize(using = CustomDateSerializer.class) public Date getCreateDate() { return createDate; } 2、全局修改(强烈推荐): import java.io.IOException; import java.text.SimpleDateFormat; import java.util.Date; import org.codehaus.jackson.JsonGenerator; import org.codehaus.jackson.JsonProcessingException; import org.codehaus.jackson.map.JsonSerializer; import org.codehaus.jackson.map.ObjectMapper; import org.codehaus.jackson.map.SerializerProvider; import org.codehaus.jackson.map.ser.CustomSerializerFactory; /** * @description 解决Date类型返回json格式为自定义格式 */ public class CustomObjectMapper extends ObjectMapper { public CustomObjectMapper(){ CustomSerializerFactory factory = new CustomSerializerFactory(); factory.addGenericMapping(Date.class,new JsonSerializer<Date>(){ @Override public void serialize(Date value,SerializerProvider provider) throws IOException,JsonProcessingException { SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); jsonGenerator.writeString(sdf.format(value)); } }); this.setSerializerFactory(factory); } } spring-servlet.xml中配置: <mvc:annotation-driven> <mvc:message-converters> <bean class="org.springframework.http.converter.json.MappingJacksonHttpMessageConverter"> <property name="objectMapper" ref="customObjectMapper"></property> </bean> </mvc:message-converters> </mvc:annotation-driven> <bean id="customObjectMapper" class="com.pmc.dwa.common.custom.CustomObjectMapper"></bean> (编辑:李大同) 【声明】本站内容均来自网络,其相关言论仅代表作者个人观点,不代表本站立场。若无意侵犯到您的权利,请及时与联系站长删除相关内容! |